Not blowing Heat? - Ford F150 Forum - Community of Ford Truck Fans



Not blowing Heat?

Reply
 
 
 
Thread Tools Search this Thread
Old 12-14-2010, 10:28 PM   #1
NashBulldawg
Thread Starter
 
NashBulldawg's Avatar
 
Join Date: Jan 2010
Location: Nashville, TN
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
Default Not blowing Heat?

Hey guys I'm back, its been a while but Im stumped. My heat seems to take a really long time to get going and when the air stops blowing cold its not very warm. This just happened 2 days ago, prior to that my AC/Heat worked fine. You think its the thermostat or has my Heater core gone bad? Anyone else have this happen? It started the same day it got really cold. I'm taking it to the shop Thursday if i cant figure it out tomorrow. Thanks in advance for the help!
NashBulldawg is offline   Reply With Quote
Old 12-14-2010, 11:38 PM   #2
Senior Member
 
John.F150's Avatar
 
Join Date: Dec 2010
Location: Huntsville, Al
Posts: 123
Thanked 2 Times in 2 Posts
Default

This may sound crazy, but check your coolant level. The coolant is what runs through the lines and through the heater core. Does the temp. fluctuate, or does it just never warm up?
John.F150 is offline   Reply With Quote
Old 12-14-2010, 11:46 PM   #3
Senior Member
 
Join Date: Sep 2010
Location: chattanooga, TN
Posts: 213
Thanks: 0
Thanked 0 Times in 0 Posts
Default

+2 on low coolant level. Next, replace the thermostat. Quick, easy and inexpensive. Not like paying a mechanic an arm & leg to do something so simple.
jonquil is offline   Reply With Quote
Old 12-15-2010, 06:15 AM   #4
Great White North
5 Year Member
 
ocps9823's Avatar
 
Join Date: Nov 2010
Location: Woodstock, Ontario, Canada
Posts: 152
Thanks: 0
Thanked 1 Time in 1 Post
Default

X3 on the coolant level.

Check the level and look for green spots where you park, and then look for a leak.

Had this problem with my Explorer, and found low coolant. All because of a loose hose clamp.

Hope you find the problem, being cold isn't fun
ocps9823 is offline   Reply With Quote
Old 12-15-2010, 06:45 AM   #5
Moderator
5 Year Member
 
Bucko's Avatar
 
Join Date: Sep 2008
Location: Lake Mary Florida
Posts: 9,121
Thanked 388 Times in 304 Posts
Default

What does the engine temp guage show? If it's cold up there, it will take longer for the engine to reach a tempurature that opens the thermostate. Engine cold, no heat.
Bucko is offline   Reply With Quote
Old 12-15-2010, 10:43 AM   #6
NashBulldawg
Thread Starter
 
NashBulldawg's Avatar
 
Join Date: Jan 2010
Location: Nashville, TN
Posts: 291
Thanks: 0
Thanked 0 Times in 0 Posts
Default

It was the coolant.... Ive checked everywhere and can't find a leak. No signs on the driveway or at work in the lot. But the coolant was a little low... Added some coolant/water mix drove around a few minutes and it was good to go again. THe coolant looked pretty dirty so im going to get a flush and fill and i think it will be good again. Thanks for the advice!
NashBulldawg is offline   Reply With Quote
Old 12-15-2010, 11:10 AM   #7
'08f150stx
5 Year Member
 
Join Date: Jul 2010
Location: Wisconsin
Posts: 1,612
Thanked 13 Times in 11 Posts
Default

Quote:
Originally Posted by NashBulldawg View Post
It was the coolant.... Ive checked everywhere and can't find a leak. No signs on the driveway or at work in the lot. But the coolant was a little low... Added some coolant/water mix drove around a few minutes and it was good to go again. THe coolant looked pretty dirty so im going to get a flush and fill and i think it will be good again. Thanks for the advice!
Keep a close eye on the coolant level.
I had a 3.0 taurus that had a VERY slow head gasket leak. Hardly noticeable. When I had no heat, in WI, wintertime is when I found out. Replacing the thermostat and flushing the cooling system gives you a fresh start. My Taurus never overheated or showed high temperatures, although the gauge is a good place to monitor.
Good luck.

When you do have it flushed, have it done by a mechanic and have them "pressure test" your cooling system. A drop in pressure when testing will tell him there is a leak and then help you find it.

Last edited by '08f150stx; 12-15-2010 at 11:15 AM.
'08f150stx is offline   Reply With Quote
Old 12-15-2010, 02:58 PM   #8
Senior Member
 
John.F150's Avatar
 
Join Date: Dec 2010
Location: Huntsville, Al
Posts: 123
Thanked 2 Times in 2 Posts
Default

Glad it was right! I've only had my truck for about three weeks, so I don't know common leak places for our trucks. If the radiator has a plastic piece along one side, it may be where the metal meets the plastic. Jeeps have that problem.
John.F150 is offline   Reply With Quote
Old 12-15-2010, 05:20 PM   #9
2004 lifted FX4
 
Join Date: Nov 2010
Location: Maryland
Posts: 179
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by NashBulldawg View Post
It was the coolant.... Ive checked everywhere and can't find a leak. No signs on the driveway or at work in the lot. But the coolant was a little low... Added some coolant/water mix drove around a few minutes and it was good to go again. THe coolant looked pretty dirty so im going to get a flush and fill and i think it will be good again. Thanks for the advice!
glad you figured yours out. I have some VERY weak heat also. I checked the antifreeze and the T-stat, both good. I don't want to even think that I might have a heatercore issue but what else could it be?? Anyone got some ideas for me. Mine will warm very slowly and if I coast on the highways at all it will drop the coolant temp gauge, not much but it does move back to the cold side a bit (the with of the needle in the gauge). anyone
mhanksii is offline   Reply With Quote
Old 12-15-2010, 07:45 PM   #10
Great White North
5 Year Member
 
ocps9823's Avatar
 
Join Date: Nov 2010
Location: Woodstock, Ontario, Canada
Posts: 152
Thanks: 0
Thanked 1 Time in 1 Post
Default

If its the heater core you should be able to smell the coolant, and the windshield will fog up.


ocps9823 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
remote start auto climate issues??? gsxr1216 2015 - Present Ford F150 54 04-28-2016 03:38 PM
1976 Not Charging metalriff Pre- 1987 / Classic Corner 7 10-01-2015 08:15 AM
Heating probs 4.6 04 heritage Fireman2789 2004 - 2008 Ford F150 0 09-29-2015 08:07 PM
Heated Mirror Question Bonder 2004 - 2008 Ford F150 0 09-29-2015 05:14 PM
Rusty spark plugs are out but... Leolo007 1987 - 1996 F150 5 09-28-2015 12:36 AM


Tags
heater

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:51 PM.


Copyright 2006 - 2016 F150Forum.com